// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "src/tint/ast/call_expression.h"

#include "src/tint/program_builder.h"

TINT_INSTANTIATE_TYPEINFO(tint::ast::CallExpression);

namespace tint::ast {

namespace {
CallExpression::Target ToTarget(const IdentifierExpression* name) {
  CallExpression::Target target;
  target.name = name;
  return target;
}
CallExpression::Target ToTarget(const Type* type) {
  CallExpression::Target target;
  target.type = type;
  return target;
}
}  // namespace

CallExpression::CallExpression(ProgramID pid,
                               const Source& src,
                               const IdentifierExpression* name,
                               ExpressionList a)
    : Base(pid, src), target(ToTarget(name)), args(a) {
  TINT_ASSERT(AST, name);
  TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, name, program_id);
  for (auto* arg : args) {
    TINT_ASSERT(AST, arg);
    TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, arg, program_id);
  }
}

CallExpression::CallExpression(ProgramID pid,
                               const Source& src,
                               const Type* type,
                               ExpressionList a)
    : Base(pid, src), target(ToTarget(type)), args(a) {
  TINT_ASSERT(AST, type);
  TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, type, program_id);
  for (auto* arg : args) {
    TINT_ASSERT(AST, arg);
    TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, arg, program_id);
  }
}

CallExpression::CallExpression(CallExpression&&) = default;

CallExpression::~CallExpression() = default;

const CallExpression* CallExpression::Clone(CloneContext* ctx) const {
  // Clone arguments outside of create() call to have deterministic ordering
  auto src = ctx->Clone(source);
  auto p = ctx->Clone(args);
  return target.name
             ? ctx->dst->create<CallExpression>(src, ctx->Clone(target.name), p)
             : ctx->dst->create<CallExpression>(src, ctx->Clone(target.type),
                                                p);
}

}  // namespace tint::ast